37212780881 has 2 divisors, whose sum is σ = 37212780882. Its totient is φ = 37212780880.

The previous prime is 37212780877. The next prime is 37212780967. The reversal of 37212780881 is 18808721273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36398534656 + 814246225 = 190784^2 + 28535^2 .

It is a cyclic number.

It is not a de Polignac number, because 37212780881 - 2² = 37212780877 is a prime.

It is a super-2 number, since 2×37212780881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37212780181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18606390440 + 18606390441.

It is an arithmetic number, because the mean of its divisors is an integer number (18606390441).

Almost surely, 2^37212780881 is an apocalyptic number.

It is an amenable number.

37212780881 is a deficient number, since it is larger than the sum of its proper divisors (1).

37212780881 is an equidigital number, since it uses as much as digits as its factorization.

37212780881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 47.

The spelling of 37212780881 in words is "thirty-seven billion, two hundred twelve million, seven hundred eighty thousand, eight hundred eighty-one".